{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Toward that , we present the functionalization of rigid native cellulose nanocrystals ( CNCs ) by esterification with a dense hydrocarbon chain brush containing cross - linkable double bonds ."}
{"Chemical": ["hydrocarbon"]}